Miraculously, overnight all my speech-based content has been restored to my (fully paid-up) Spreaker account. If the take-down really was a targeted move against me, I suspect the reinstatement will be as a direct result of the huge number of people who I know messaged Spreaker to express their outrage that my content had been taken down without warning, so a big thank you to all who did just that.
The music-based shows remain gone. I suspect this will be to justify why they tried removing everything in the first place, on the grounds the music stuff breached copyright.
So Spreaker remains the home for the audio-only version of Good Vibrations, while The Sound of Freedom, the Sound of Now and all my vintage DJ stuff will now reside on Mixcloud. My YouTube remains intact at www.youtube.com/markdevlintv